CN103295846A - Current contactor with switching mechanism - Google Patents
Current contactor with switching mechanism Download PDFInfo
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- CN103295846A CN103295846A CN2012100484405A CN201210048440A CN103295846A CN 103295846 A CN103295846 A CN 103295846A CN 2012100484405 A CN2012100484405 A CN 2012100484405A CN 201210048440 A CN201210048440 A CN 201210048440A CN 103295846 A CN103295846 A CN 103295846A
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Abstract
The invention discloses a current contactor with a switching mechanism. The current contactor with the switch mechanism comprises a fixed contact, a moving contact, a moving iron core and the switching mechanism, wherein the fixed contact is fixedly arranged on a shell body of the contactor, the moving contact can move between a fixed contact closed position and a fixed contact open position, the moving iron core can move between a closed position and an open position, and the switching mechanism responds to movement of the iron core between the closed position and the open position so that the moving contact moves between the closed position and the open position. The switching mechanism comprises a connecting rod mechanism and a tripping mechanism, the tripping mechanism comprises a lock latch and a tripping rod which is locked by the lock latch, the connecting rod mechanism comprises a first connecting rod and a second connecting rod, the first end of the first connecting rod is connected with a moving contact support in a pivot mode, the first end of the second connecting rod is connected with the second end of the first connecting rod in a pivot mode, the second end of the second connecting rod is connected with the tripping rod in a pivot mode, and the tripping mechanism cooperates with the connecting rod mechanism so that the moving contact is kept in the closed position.
Description
Technical field
The present invention relates to a kind of contactor, more particularly, relate to a kind of contactor with low-power consumption of switching mechanism.
Background technology
Contactor is the extensive Industry Control electrical equipment of a kind of use, belongs to the low-voltage electrical apparatus category, along with country to the going deep into of energy-conserving and environment-protective working dynamics, its energy consumption level more and more is subjected to the attention of government department.China has put into effect relevant standard GB 21518-2008 " A.C. contactor efficiency limit value and efficiency grade (Minimum allowable values of energy efficiency and energy efficiencygrades for AC contactors) " in recent years, the same with household electronic products, the efficiency grade of contactor is divided into 5 grades, grade numerical value is more little, rank is more high, and efficiency is also just more high.So 1 grade is the low energy consumption product, encouraged research and development to produce.And 5 grades be the high energy consumption product, is limited to use and eliminates.The product of developing low energy consumption conforms to 12 planning of China, will be subjected to government's approval, thereby have bigger market.
At present, contactor all adopts the method for direct electromagnetic actuation to keep in touch the closure of device.Be that electromagnet need overcome the counter-force of " cut-offfing spring " and the closure that contact pressure keeps the contactor contact.Because the necessary contact pressure of contact closure and to cut-off the counter-force of spring all very big, thereby require electromagnet to have enough energy to keep this adhesive.The energy consumption of the desired electromagnet of this maintenance contact closure is exactly the main component of the energy consumption of contactor.This shows, the energy consumption of contactor and its counter-force of cut-offfing spring and contact pressure and positive correlation, and numerical value is very big.Exactly because this reason, the energy consumption of existing product is all bigger, and it is 1 grade that the product of some specification does not have the efficiency grade.
The contactor of prior art mainly contains following two types:
Fig. 1 shows the simplification schematic diagram of first type contactor.As shown in Figure 1, when electromagnet coil is switched on, moving contact 2 via lever 9 under the pulling of moving iron core 3 fast with fixed contact 1 closure of client's terminal 10 and the counter-force that overcomes the contact pressure (not shown) and cut-off the spring (not shown), and be maintained at make position; When electromagnet coil was disconnected, moving contact 2 arrived open position fast under the double action of cut-offfing spring and touch spring.Because drive the beginning of contact closure, the electromagnet air gap is very big, need very big electric current could realize this driving, and after contact closure, electromagnet coil current still remain on this bigger state, so the energy consumption of this contactor is very high.
Second type contactor is provided with main coil and auxiliary winding.After the user connected control circuit, the built-in electronic wiring board was given the power supply of electromagnet main coil, to realize the contact quick-make.After a few tens of milliseconds (this moment, contactor was closed), wiring board stops to transfer to auxiliary winding and powering to the main coil power supply.The least energy that this moment, electromagnet needed is counter-force and the contact pressure sum of cut-offfing spring, so the energy consumption of this contactor is higher.In addition, this series products is because the existence of electronic circuit board, also has the defective that grid voltage quality and electromagnetic interference are had higher requirements.
Therefore, there is the high problem of energy consumption in the contactor of prior art, and second type contactor is subjected to the influence of line voltage distribution and electromagnetic interference, poor reliability easily.
Summary of the invention
The present invention makes in view of above-mentioned prior art problems, the object of the present invention is to provide a kind of contactor of low energy consumption.The present invention mainly is the method that keeps the contactor contact closure by changing, and namely keeps contact closure to change machinery into by traditional electromagnet and keeps contact closure, realize the low energy consumption of contactor.Because energy consumption level of the present invention is significantly less than existing product, so it will promote the standard of existing efficiency grade effectively, makes the product that has present technique more competitive.
The present invention can continue the switching mechanism that keeps contact closure can allow contact open fast again simultaneously by switching to less current after the contact closure immediately by being provided for a kind of in electric current (exchange or the direct current) contactor under the situation that electromagnet cuts off the power supply fully, thereby a kind of contactor of low energy consumption is provided.
The objective of the invention is by providing a kind of contactor to be achieved, this contactor comprises: fixed contact, this fixed contact are fixedly installed on the housing of described contactor; Moving contact, this moving contact are configured to can be mobile between and the position of separating closed with this fixed contact; Moving iron core, this moving iron core is configured to and can moves between its attracted position and disconnected position; And switching mechanism, this switching mechanism responds the movement of described moving iron core between described attracted position and described disconnected position makes described moving contact mobile between make position and separation point position, this switching mechanism comprises linkage and tripping mechanism, described tripping mechanism comprises snap close and release lever, this release lever can be by described snap close locking, described linkage comprises first connecting rod and second connecting rod, first end of described first connecting rod with its on moving contact is set moving contact rack pivot and to be connected, first end of described second connecting rod and second end of described first connecting rod can pivot and be connected and second end of described second connecting rod can pivot with described release lever and is connected, described tripping mechanism cooperates mutually with described linkage, so that described moving contact is remained on described make position.
Of the present invention preferred embodiment in, described release lever have on the housing that is arranged on described contactor pivotly first end and can be by second end of described snap close locking.
Of the present invention preferred embodiment in, described snap close is arranged on the housing of described contactor pivotly, with at the locked position of coupler of second end of the described release lever of locking with discharge between the unlocked position of second end of described release lever and rotate.
Of the present invention preferred embodiment in, mobile between described attracted position and described disconnected position in response to described moving iron core, described latching between described locked position of coupler and the described unlocked position rotated.
Of the present invention preferred embodiment in, described moving iron core is provided with push rod, described push rod promotes described latching between described locked position of coupler and the described unlocked position and rotates.
Of the present invention preferred embodiment in, described release lever pivots with described linkage and is connected, and with by means of described linkage, described moving contact is remained on described make position.
Of the present invention preferred embodiment in, described contactor also comprise be used between the housing that is arranged on described contactor and the described moving contact driving described moving contact cut-off action cut-off spring and be arranged on the housing of described contactor and described moving iron core between be used for back-moving spring that described moving iron core is resetted.
Of the present invention preferred embodiment in, described contactor also comprises for the main coil and the auxiliary winding that drive described moving iron core motion, and described main coil is powered so that described moving iron core overcomes described counter-force of cut-offfing spring and described back-moving spring moves to described attracted position from described disconnected position; Described auxiliary winding is powered so that the counter-force that described moving iron core overcomes described back-moving spring remains on described attracted position.
Of the present invention preferred embodiment in, described contactor also comprises sensitive switch, described sensitive switch is being powered to described main coil and is being switched between the auxiliary winding power supply by any driving in described linkage, described tripping mechanism and the described moving iron core.
Utilize contactor of the present invention, because in the moving contact make position, moving iron core only needs to overcome the counter-force of self back-moving spring, and therefore, the energy that moving iron core needs reduces, and thus, has reduced the required energy of whole contactor.
Description of drawings
Other purposes of the present invention, feature and industry and technical significance will be more readily understood by below in conjunction with accompanying drawing the detailed description of the specific embodiment of the present invention being become, among the figure:
Fig. 1 is the operating principle schematic diagram according to the embodiment of the contactor of prior art;
Fig. 2 A to Fig. 2 D is the operating principle schematic diagram that illustrates according to the embodiment of the contactor with switching mechanism of the present invention, Fig. 2 A be illustrate moving contact and fixed contact be in closed before the view of state, Fig. 2 B illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of hold mode, Fig. 2 C illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of trip status, and Fig. 2 D illustrates moving contact to be in the view that separates completion status with fixed contact; And
Fig. 3 is the schematic structure chart according to the embodiment of the contactor with switching mechanism of the present invention.
Embodiment
Describe preferred implementation of the present invention with reference to the accompanying drawings in detail.
Fig. 2 A to Fig. 2 D is the operating principle schematic diagram according to the preferred implementation of the contactor with switching mechanism of the present invention, wherein Fig. 2 A illustrates the view that moving contact and fixed contact are in separated position, Fig. 2 B illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of hold mode, Fig. 2 C illustrates moving contact and fixed contact is in closure state, but switching mechanism is in the view of trip status, and Fig. 2 D illustrates the view that moving contact and fixed contact are in separated position.And Fig. 3 is the schematic structure chart according to the embodiment of the contactor with switching mechanism of the present invention.
As shown in Figure 3, switching mechanism according to the present invention is made of linkage and tripping mechanism, and linkage is two groups that are symmetrically distributed with respect to moving contact rack 13, and still, the present invention is not limited thereto.For simplicity, will be that present invention is described for example with one group only below.
Can be clear that by Fig. 3, comprise fixed contact 1 on the housing (not shown) that is arranged on contactor according to the contactor of present embodiment; Can be between and the position of separating closed with fixed contact 1 mobile moving contact 2, moving contact 2 is arranged on the moving contact rack 13, and is relative with fixed contact 1; The moving iron core 3 that can between its attracted position and disconnected position, move, moving iron core 3 with prior art in identical mode be arranged on the housing of contactor so that moving iron core 3 can move with respect to the housing of contactor with open and close moving contact 2 and fixed contact 1; Be fixed on the static iron core 11 that is used for the moving iron core 3 of adhesive on the housing (not shown) of contactor; And the switching mechanism that iron core 3 makes moving contact movement between make position and separation point position in the movement between its attracted position and the disconnected position is moved in response, this switching mechanism comprises linkage and tripping mechanism, linkage with its on moving contact 2 is set moving contact rack 13 pivot and be connected, tripping mechanism is configured to cooperate mutually with linkage, so that moving contact is remained on make position.
As shown in Figure 3, described linkage comprises: first connecting rod 5 and second connecting rod 6, first end of first connecting rod 5 are connected with moving contact rack 13 pivots and second end of first connecting rod 5 is connected with first end pivot of second connecting rod 6.
Described tripping mechanism comprise around the B axle with respect to the rotating snap close 7 of the housing of contactor and at first end around the rotating release lever 4 of first A that is fixed on the housing of contactor.Second end of this release lever 4 is locking end 41, and described snap close 7 is provided with locked groove 71 in the position corresponding with described locking end, and this locking end 41 can be inserted in the locked groove 71.Second end of described second connecting rod 6 is pivotably connected to the roughly centre position of described release lever 4, tripping mechanism is cooperated mutually with described linkage, thereby described moving contact is remained on described make position.
Also be provided with push rod 8 on described moving iron core 3, roughly corresponding to a side of described snap close 7, rotate around the B axle in order to can promote snap close 7 position of this push rod 8.
In addition, contactor of the present invention also be provided be used between the housing that is arranged on contactor and the moving contact 2 driving described moving contact cut-off action cut-off spring and be arranged on the housing of contactor and moving iron core 3 between be used for back-moving spring that described moving iron core 3 is resetted, and be arranged between moving contact rack 13 and the moving contact 2 for making the tightly closed touch spring 12 of moving contact and fixed contact, wherein be arranged on and cut-off spring to moving contact component (moving contact rack 13 (referring to Fig. 3) between the housing of contactor and the moving contact 2, moving contact 2 and touch spring 12 etc.) effect one power that makes progress, after mechanism trips, impel moving contact component to make progress rapid movement with breaking current.Because these structures with of the prior art identical, do not repeat them here.
In addition, in contactor of the present invention, also be provided with the sensitive switch (not shown), this sensitive switch can be driven by above-mentioned arbitrary parts of mentioning, for example can be driven by the snap close 7 of the arbitrary connecting rod in the aforementioned link mechanism or tripping mechanism and release lever 4.And, comprise that also the switching between main coil and the auxiliary winding can be realized by the action of corresponding sensitive switch for the main coil (not shown) and the auxiliary winding (not shown) that drive moving iron core 3 motions.
Explain operating principle according to contactor of the present invention below with reference to Fig. 2:
At first, shown in Fig. 2 A, contactor is in off-state, at this moment, separates between moving contact 2 and the fixed contact 1.After connecting control circuit, the main coil of electromagnet is switched on, and iron core 3 is moved along the downward direction among the figure, moves downward thereby promote moving contact rack 13, thus, has realized the quick-make of moving contact 2 and fixed contact 1, shown in Fig. 2 B.Simultaneously, when moving contact rack 13 moves downward, the first connecting rod 5 that moving contact rack 13 pulling downwards is connected with its pivot and the second connecting rod 6 that pivots and be connected with this first connecting rod 5, release lever 4 clockwise rotates around first A via second connecting rod 6, and make the locking end 41 of release lever 4 enter the locked groove 71 of snap close 7, make release lever 4, snap close 7 and first and second connecting rods 5,6 self-lockings under the effect of cut-offfing spring counter-force (not shown) and touch spring (not shown), thereby the contactor contact is remained on make position, shown in Fig. 2 B.At this moment, the sensitive switch (not shown) corresponding component triggers that is triggered, and between main coil and auxiliary winding, switch, namely, disconnect main coil, connect the electromagnet auxiliary winding simultaneously, keep moving iron core 3 and be in the attracted position to overcome the counter-force that makes the back-moving spring that iron core 3 resets.Because this moment, electromagnet only need overcome the counter-force of back-moving spring, so the energy consumption of this contactor is very low.
Then, when needs turn-off current contactor, the auxiliary winding of electromagnet is disconnected, moving iron core 3 upward direction in the figure under the effect of moving iron core return-spring is moved, the push rod 8 that is arranged on the moving iron core 3 promotes snap close 7, make snap close 7 rotate along clockwise direction among the figure around the B axle, shown in Fig. 2 C.At this moment, the rotation of snap close 7 makes that the locking between the locking end 41 of locked groove 71 and release lever 4 is triped, and the rock-steady structure of release lever 4, snap close 7 and first and second connecting rods 5,6 is broken.Moving contact 2 arrives open position fast under the double action of cut-offfing spring and touch spring.
According to contactor of the present invention, the closure of moving contact 2 and fixed contact 1 is kept by linkage and tripping mechanism, and moving 3 needs of iron core overcome the effect of himself back-moving spring, and therefore, the required electric current of auxiliary winding is less, has reduced energy consumption.Simultaneously, owing to cancelled electronic circuit board, properties of product are not subjected to the influence of line voltage distribution and electromagnetic interference.
Structure and operating principle and operating process with contactor of switching mechanism of the present invention more than described, in order to verify that the contactor with switching mechanism according to the present invention has the characteristic of low energy consumption, the product of prior art and the energy consumption of the product behind application the present invention are calculated:
Contact closure confining force that the 20A A.C. contactor is required in the prior art:
The required confining force F1:12N that provides of electromagnet
Application is by the required tripping force of the A.C. contactor of the same specification of the technology of the present invention:
The required confining force F2:3N that provides of electromagnet
ξ＝F2/F1＝0.25
Rated current is more big, and then the ξ value is more little, and the advantage of the technology of the present invention is more obvious.
Although describe the present invention in detail with reference to preferred implementation of the present invention in the above, but the invention is not restricted to above-mentioned embodiment, for example, in the above-described embodiment, tripping mechanism remains on make position by means of linkage with moving contact, but tripping mechanism also can comprise the parts of independent setting, independently moving contact is remained on make position.In addition, in the above-described embodiment, although release lever is rotation formula, those skilled in the art also can adopt other forms of release lever, as long as can assist moving contact machinery are remained on make position.Therefore, scope of the present invention is only limited by appending claims and equivalent thereof.
Claims (9)
1. contactor comprises:
Fixed contact (1), this fixed contact are fixedly installed on the housing of described contactor;
Moving contact (2), this moving contact are configured to can movement between and the position of separating closed with this fixed contact (1);
Moving iron core (3), this moving iron core is configured to and can moves between its attracted position and disconnected position; And
Switching mechanism, this switching mechanism responds the movement of described moving iron core (3) between described attracted position and described disconnected position makes described moving contact (2) mobile between make position and separation point position, this switching mechanism comprises linkage and tripping mechanism, described tripping mechanism comprises snap close (7) and release lever (4), this release lever (4) can be by described snap close (7) locking
It is characterized in that, described linkage comprises first connecting rod (5) and second connecting rod (6), first end of described first connecting rod (5) with its on moving contact (2) are set moving contact rack (13) pivot and to be connected, first end of described second connecting rod (6) and second end of described first connecting rod (5) can pivot and be connected and second end of described second connecting rod (6) can pivot with described release lever (4) and is connected, described tripping mechanism cooperates mutually with described linkage, so that described moving contact (2) is remained on described make position.
2. contactor as claimed in claim 1 is characterized in that, described release lever (4) have on the housing that is arranged on described contactor pivotly first end and can be by second end of described snap close (7) locking.
3. contactor as claimed in claim 2, it is characterized in that, described snap close (7) is arranged on the housing of described contactor pivotly, with at the locked position of coupler of second end of the described release lever of locking with discharge between the unlocked position of second end of described release lever and rotate.
4. contactor as claimed in claim 3 is characterized in that, mobile between described attracted position and described disconnected position in response to described moving iron core (3), described snap close (7) rotates between described locked position of coupler and described unlocked position.
5. contactor as claimed in claim 4 is characterized in that, described moving iron core (3) is provided with push rod (8), and described push rod (8) promotes described snap close (7) and rotates between described locked position of coupler and described unlocked position.
6. as each described contactor in the claim 1 to 5, it is characterized in that described release lever (4) pivots with described linkage and is connected, and with by means of described linkage, described moving contact (2) is remained on described make position.
7. as each described contactor in the claim 1 to 5, it is characterized in that, described contactor also comprise be used between the housing that is arranged on described contactor and the moving contact (2) driving described moving contact cut-off action cut-off spring and be arranged on the housing of described contactor and described moving iron core (3) between for the back-moving spring that described moving iron core (3) is resetted.
8. contactor as claimed in claim 7, it is characterized in that, described contactor also comprises for the main coil and the auxiliary winding that drive described moving iron core (3) motion, and described main coil is powered so that described moving iron core (3) overcomes described counter-force of cut-offfing spring and described back-moving spring moves to described attracted position from described disconnected position; Described auxiliary winding is powered so that described moving iron core (3) overcomes the counter-force of described back-moving spring and remains on described attracted position.
9. contactor as claimed in claim 8, it is characterized in that, described contactor also comprises sensitive switch, described sensitive switch is being powered to described main coil and is being switched between the auxiliary winding power supply by any driving in described linkage, described tripping mechanism and the described moving iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210048440.5A CN103295846B (en) | 2012-02-28 | 2012-02-28 | There is the contactor of switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210048440.5A CN103295846B (en) | 2012-02-28 | 2012-02-28 | There is the contactor of switching mechanism |
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| Publication Number | Publication Date |
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| CN103295846A true CN103295846A (en) | 2013-09-11 |
| CN103295846B CN103295846B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210048440.5A Active CN103295846B (en) | 2012-02-28 | 2012-02-28 | There is the contactor of switching mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216077A (en) * | 2018-09-26 | 2019-01-15 | 平湖市华兴电子有限公司 | Button switch |
| CN110828252A (en) * | 2019-11-21 | 2020-02-21 | 南京普暴教育科技有限公司 | Robot programming device for teaching robot program |
| CN112086315A (en) * | 2020-09-14 | 2020-12-15 | 宁夏隆基宁光仪表股份有限公司 | Intelligent electric meter based on novel pulse relay |
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| CN2146780Y (en) * | 1993-01-04 | 1993-11-17 | 程文龙 | Low-voltage releasing noiseless and power-saving AC contactor |
| CN1087204A (en) * | 1993-03-15 | 1994-05-25 | 烟台低压电器研究所 | The self-locking release that a kind of low-voltage electrical apparatus is used |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109216077A (en) * | 2018-09-26 | 2019-01-15 | 平湖市华兴电子有限公司 | Button switch |
| CN109216077B (en) * | 2018-09-26 | 2023-12-12 | 温州市长江电器开关厂 | Push button switch |
| CN110828252A (en) * | 2019-11-21 | 2020-02-21 | 南京普暴教育科技有限公司 | Robot programming device for teaching robot program |
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| CN112086315A (en) * | 2020-09-14 | 2020-12-15 | 宁夏隆基宁光仪表股份有限公司 | Intelligent electric meter based on novel pulse relay |
| CN112086315B (en) * | 2020-09-14 | 2023-04-18 | 宁夏隆基宁光仪表股份有限公司 | Intelligent electric meter based on novel pulse relay |
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| CN103295846B (en) | 2016-09-07 |
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